[PATCH] powerpc: Enable VMX copy on PPC970 (G5)

There's no reason I'm aware of that the VMX copy loop shouldn't work on
PPC970. And in fact it seems to boot and generally be happy.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
 arch/powerpc/include/asm/cputable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index b118072670fb..f412666fafe2 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h

@@ -411,7 +411,7 @@ enum {
 	    CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_201 | \
 	    CPU_FTR_ALTIVEC_COMP | CPU_FTR_CAN_NAP | CPU_FTR_MMCRA | \
 	    CPU_FTR_CP_USE_DCBTZ | CPU_FTR_STCX_CHECKS_ADDRESS | \
-	    CPU_FTR_HVMODE | CPU_FTR_DABRX)
+	    CPU_FTR_HVMODE | CPU_FTR_DABRX | CPU_FTR_VMX_COPY)
 #define CPU_FTRS_POWER5	(CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
 	    CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
 	    CPU_FTR_MMCRA | CPU_FTR_SMT | \

-- 
2.5.0

Am Donnerstag, 21. Januar 2016, 11:25:27 schrieb Michael Ellerman:

There's no reason I'm aware of that the VMX copy loop shouldn't work on
PPC970. And in fact it seems to boot and generally be happy.

does the same also hold for Cell? Maybe there are even more optimizations 
which can be copied from PPC970.

Marc 

On Thu, 2016-01-21 at 10:51 +0100, Marc Dietrich wrote:

Am Donnerstag, 21. Januar 2016, 11:25:27 schrieb Michael Ellerman:

quoted

There's no reason I'm aware of that the VMX copy loop shouldn't work on
PPC970. And in fact it seems to boot and generally be happy.

does the same also hold for Cell? Maybe there are even more optimizations 
which can be copied from PPC970.

Yeah in theory the PPE has VMX, I'll try it.

cheers

On Thu, Jan 21, 2016 at 11:25:27AM +1100, Michael Ellerman wrote:

There's no reason I'm aware of that the VMX copy loop shouldn't work on
PPC970. And in fact it seems to boot and generally be happy.

But is it faster?


Segher

On Fri, 2016-01-22 at 02:08 -0600, Segher Boessenkool wrote:

On Thu, Jan 21, 2016 at 11:25:27AM +1100, Michael Ellerman wrote:

quoted

There's no reason I'm aware of that the VMX copy loop shouldn't work on
PPC970. And in fact it seems to boot and generally be happy.

But is it faster?

Well Anton wrote it, so of course it is. ;)

Will try and get some numbers.

cheers